1.

If Sn denotes the sum of the first n terms of an A-p , then the value of [(S3n - S3n-1) - (S2n - S2n - S2n-1)] will be(A) Sn - Sn-1 (B) nd(C) 0(D) S3n - Sn

Answer»

Correct option is (B) nd



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